Home / 638,221.38-880,730.34-347,842.12

Finding the Fourth Proportional to 638,221.38, 880,730.34 and 347,842.12

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Solution

The fourth proportional to 638,221.38, 880,730.34 and 347,842.12 is: 480,013.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,221.38 : 880,730.34 = 347,842.12 : x
  2. Step 2: Convert to fraction form
    638,221.38/880,730.34 = 347,842.12/x
  3. Step 3: Cross multiply
    638,221.38x = 880,730.34 × 347,842.12
  4. Step 4: Simplify right side
    638,221.38x = 306,355,110,214.42
  5. Step 5: Solve for x
    x = 306,355,110,214.42/638,221.38
  6. Step 6: Final answer
    x = 480,013.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.